I'm using urlRewrite for friendly urls.  This works great!  However, whenever I log-in, the page refreshes and the url changed back to un-friendly url.  E.g.  the friendly url is http://domainname.com/about_us.  Upon logging in, the page refreshes and the url changed to http;//domainname.com?page=about.  I want the url to stay same whenever I log in.  How can I do that? 

Please advise.  Thanks!